Bottle cap



FIG. 1 is a side elevational view of a bottle cap, showing my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a reduced side elevational view thereof, the dotted line showing the bottle is for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a bottle cap, as shown and described. 